package com.lu.servlet;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.lu.dao.impl.NewsDaoImpl;
import com.lu.entity.News;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

public class Get20NewsByNtidServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");

        resp.setContentType("text/html");
        PrintWriter out = resp.getWriter();

        int ntid = Integer.parseInt(req.getParameter("ntid"));
        List<News> newsList = new NewsDaoImpl().get20News(ntid);
//        Gson gson = new Gson(); // 默认创建
        Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").create(); // 指定格式创建
        String str = gson.toJson(newsList);// 直接将obj对象 转化成 JSON对象的字符串
        out.print(str);

        out.flush();
        out.close();
    }
}
